Oh! Yeah, it took me a minute, but I guess I got there in the end.
A piece of advice:
I don't know if it's what you were going for, but I think the poses look a bit too organic for a mecha. It's probably partially cause I've been making monsters for Dark Hope, but at first I thought instead of a mecha it was some kind of humanoid toad or frog.
With a mech, poses should typically look more static and robotic, #5 is a good example of this. The others have a bit too much twisting and bending, it looks like something organic, not a machine made of inflexible metal. Try thinking about where a mech like this would have rotation points or joints.
Not to overstep my bounds, just a bit of advice.